Fan attachment.



J. E. GILSON. PAN. ATTACHMENT. APPLIOA'TION FILED JUNE 14, 1909.

Patenfed Feb. 14, 1911.

NM Ill. 1 y.

UNTTED %TATE% PATENT f f lfifim JOHN E. GILSON, OF PORT WASHINGTON,WISCONSIN, ASSIGNOE TO GILSON MANU- FACTURING COMPANY, OF PORTWASHINGTON, WISCONSIN.

FAN ATTACHMENT.

To all whom it may concern:

Be it known that 1, JOHN E. GILSON, a citizen of the United States, andresident of Port \Vashington, in the county of Ozaukee and State ofWisconsin, have invented certain new and useful Improvements in FanAttachments; and I do hereby declare that the following is a full,clear, and exact description thereof.

My invention consists in what is hereinafter particularly set forth withreference to the accompanying drawings and pointed out in claims, itsobject being to improve the apparatus set forth in Patent No. 875,991 ofJanuary 7, 1908.

Figure 1 of the drawings represents a partly sectional end view of myimproved apparatus in connection with the cylinder of aninternal-combustion engine; Fig. 2, an inner side elevation of afan-case supporting bracket constituting part of said apparatus, thefan-case being indicated by dotted lines in this view, and Fig. 3, aplan view of the bracket partly in horizontal section on the planesindicated by lines 3*3 in Fig. 1, a fragment of the fan-casing beingincluded in this view.

Referring by numeral to the drawings, 1 indicates the head of thecylinder of an internalcombustion engine, the inner side of said headbeing shown. A web 5 between a pair of outer bosses 6 of thecylinder-head is engaged by bolts 7, and these bolts also engage notches8 in an arm 9 that is ofiset from one side of a bar 10, between the endsof the same and adjacent to the center thereof, the notched portion ofthe arm being parallel to the bar. The other side of the bar is providedwith end flanges 11 that extend at right-angles to the same and said barand the arm 9 constitute a bracket that is preferably a one piececasting. Because of the notches in the arm, the bracket may be readilyplaced or displaced, with reference to the cylinder-web 5, withoutremoval of the bolts 7, it only being necessary to turn these bolts outfar enough to obtain a clearance for said arm sufficient to permit ofsaid notches therein being engaged with the aforesaid bolts ordisengaged therefrom.

The outer side of the bar 10 of the bracket is provided midway of itsends with a boss, and detachably secured in the boss, by a set-bolt 12,is an arbor 13 having a bore 14 and a port 15 leading from the bore. In

Specification of Letters Patent.

Application filed June 14, 1909.

Patented Feb. 1%, 1911.

Serial No. 501,924.

screw-thread connection with the bore-end of the arbor is a stop in theform of a union 16 in like connection with a lubricant-cup 17 having aremovable cap, and a lock-nut 18 on said end of said arbor, inopposition to said stop, is provided with a lever-arm 19 to permit ofits adjustment without the aid of a wrench.

Loose on the arbor, back of the locknut, is the hub 20 of adriving-pulley 21, and rigidly secured on the pulley-hub, by driving-iitor otherwise, is a screw-propeller 22 having vanes 23 fastened to itsblades to therewith constitute a rotary fan for which a suitable casingis bolted or otherwise rigidly secured to the end flanges 11 of thebracket-bar aforesaid. The fan-casing herein shown is similar to the onedisclosed in the patent aforesaid or in other words it consists of anannular band 24 concentric to the fan and having a segmental hoodextension 25 in rear of the aforesaid bracket, said extensionconstituting an inwardly inclined deflector, the angle of which issufficient to direct some air from said fan directly against thecylinder head of the engine or toward the fan-axis, the remainder of theair being directed toward said cylinder lengthwise of same.

An outer protective screen of suitable wire-mesh netting is shown inconnection with the band 24 of the fan-casing, and said screen isprovided with a central opening through which to pass the driving-pulley21 when the apparatus herein specified is being assembled.

The peculiar bracket aforesaid effectually prevents displacement of thefan-casing and fan incidental to vibration, and the general constructionand arrangement of the various parts of the entire apparatus isadvantageous in every particular.

I claim:

1 1. In a fan-attachment, a bracket consisting of a bar having an armoffset from one side thereof between its ends and adjacent to itscenter, a portion of the arm parallel to the bar being for connectionwith a support; a casing in rigid connection with the ends of the bar,an arbor in similar connection with said bar to extend from the otherside thereof central of the casing, and a combined driving-pulley andfan loose on the arbor, the fan being rotative within said casing.

2. In a fan-attachment, a bracket consisting of a bar having an armoffset from one side thereof between its ends and adjacent to itscenter, a portion of the arm parallel to the bar being provided withnotches for the engagement of bolts by which to secure the bracket to asupport; a casing in rigid connection with the ends of the bar, an arborin similar connection with said bar to extend from the other sidethereof central of the casing; and a combined driving-pulley and fanloose on the arbor, the fan being rotative within said casing.

8. In a fan-attachment, a bracket consist-' ing of a bar having endflanges at rightangles thereto and provided with an arm offset from oneside thereof between its ends and adjacent to its center, a portion ofthe arm parallel to the bar being for connection with a support; acasing in rigid connection with said flanges of the bar, an arbor insimilar connection with said bar to extend from the other side thereofcentral of the casing, and a combined driving-pulley and fan loose onthe arbor, the fan being rotative within said casing.

4. I11 a fan-attachment, a bracket consisting of a bar having a centralboss upon one of its sides and an arm offset from its other side betweenits ends adjacent to its center, a portion of the arm parallel to thebar being for connection with a support; an arbor and means for rigidlysecuring the same in detachable engagement with said boss, a casing inrigid connection with the ends of said bar, and a combined drivingpulleyand fan loose on the arbor, the fan being rotative within said casing.

5. In a fan-attachment, a bracket consisting of a bar having an armoffset from one side thereof between its ends and adjacent to itscenter, a portion of the arm parallel to the bar being for connectionwith a support; a casing in rigid connection with the ends of the bar,an arbor in similar connec tion with said bar to extend from the otherside thereof central of the casing, a drivingpulley having its hub looseon the arbor, and a fan fast on the pulley hub within said casing.

6. In a fail-attachment a bracket consisting of a bar having an armoffset from one side thereof bet-ween its ends and adjacent to itscenter, a portion of the arm parallel to the bar being for connectionwith a support; a casing in rigid connection with the ends of the bar,an arbor in similar connec tion with said bar to extend from the otherside thereof central of the casing, a combined driving-pulley and fanloose on the arbor, the fan being rotative within said casing; a stop onthe outer end of said arbor, and a nut threaded on the aforesaid arborbetween the stop and the hub of the pulley.

7. In a fan-attachment, a bracket consisting of a bar having an armoffset from one side thereof between its ends and adjacentto its center,a portion of the arm parallel to the bar being for connection with asupport; a casing comprising an annular band, in rigid connection withthe ends of the bar, and a centrally open wire-mesh screen fastened tothe band; an arbor in similar connection with said bar to extendtherefrom through the central opening of said screen, and a combineddriving-pulley and fan loose on the arbor, the fan being rotative withinsaid casing.

In testimony that I claim the foregoing I have hereunto set my hand atPort Vashington in the county of Ozaukee and State of Visconsin in thepresence of two wit-- nesses.

JOHN E. GILSON.

Witnesses:

T. A. BOERNER, A. J. Bonnenn.

